Window ventilator



Dec. 8, 1936. E. w. FRIEDHOLDT, JR 2,

WINDOW VENTILATOR Filed Nov. 10, 1954 2 Shee ts-Sheet 2 Patented Dec. 8,1936 UNITED STATES PATENT OFFICE.

I Q WINDdVZ VINTIIIA won I Edwin W. Friedholdt, In, Chicago, Ill. 99Application No. 752,

Myinvention relates to the windows of dwellings, factories and otherbuildings, and more particularly to ventilators therefor, and my mainobject is to provide a ventilator which is readily .5 applicable to anywindow installation whereby to permanently convert the same into-aventilated window.

A further object of the invention is to provide a ventilator whichpermits various adjust- 10 ments and degrees of ventilation while makingthe window safe against unauthorized entrance,

' or burglar proof in the popular sense.

A still further object of the invention is to design. the novelventilator with means to fully 16 seal it against drafts or seepage ofair when it is closed, that it may serve as a perfect closure when it isnot in use as a ventilator.

Another object of the invention is to so construct and apply the novelventilator that it 20 does not weaken but rather remforces the window.

An additional object of the invention is "to construct the novelventilator along lines of simplicity and rigidity, whereby to permit itto be manufactured inexpensively and to serve effl- 24 ciently overalong period. I

With thevaboye objects in view, and any others which may suggestthemselves from the description to follow, -a better understandingof theinvention may be had by referring to the accompanying drawings, inwhich- Figure 1 is an elevation of a typical window equipped with thenovel ventilator as seen from without;

Figure 2 is a similar view, asseen" from within; Figure 3 is an enlargedvertical section of Figure 2 to the extent covered'by the ventilator,showing the latter closed and omitting a fly screen attachment;

Figure. 4 is a view similar to Figure 3, showing the ventilator open;

Figure 5. is a section on the line 5-5 of Figure 3;

- Figure 6 is an elevation of a double type of 45 window to whichventilator units of the character considered are applied.

Figure '7 is an enlarged sectional view taken substantially on the line'Il of Figure 2.

As mentioned, the novel ventilator is in- 50 tended to be installed as aunit in a window. Thus, it is applicable in the lower part of the innersash by removing a part of the glass and installing the ventilator unitas a substitute; or the entire pane of the sash may be removed 55 andanother one containing the ventilator unit substituted, rendering theventilator an easy replacement for any window sash.

Referring specifically to the drawings, a typ ical window sash is shownin Figures 1 to 4, the upper and lower rails thereof being indicated .3-at I0 and II, while the stiles are indicated at l2. The preferredventilator installation is of the double visor type and built in arectangular frame having upper and lower bars l3 and side pieces 14connecting the bars. These parts are made of flat material, and thespacing of the side pieces I4 is such as to leave some room between thesides of the ventilator and the sash stiles I2 for the fitting of glassinserts l5. The ventilator is also preferably spaced somewhat 15 fromthe lower sash rail I I, to permit the fitting of a bottom glass insertit between the ventilator and the rail. While the ventilator couldextend fully across the sash and to the bottom rail thereof, I prefer toprovide the marginal Z0 glassiinserts to serveas supplements of thewindow paneaiid permit more light to enter. Also, with the ventilatormanufactured as a unit, its top and bottom bars l3 could be made ofextra length so as to be trimmed off at any P int desired to fitdifferent widths of sashes. Thus, the ventilator can be adapted to suchsashes without being altered in its vital construction. Of course, afterthe length of the bars l3 for any installation has been determined, theglass inserts l5 and II; can easily be cut to size.

I As indicated in Figure 5, the material of the ventilator frame ischanneled in its external marginal edges as indicated at IT and-fittedwith lead channel strip inserts Ila. to receive the window pane andother glass elements and form weather proof joints therewith. The glasselements are alined with the ventilator frame by being marginallyencased in a metallic chano nel frame III which seats like the windowpane in the sash and receives the putty seal on the outside.

The side pieces ll of the ventilator frame are extended with verticalrearward strips I9 which terminate the inward bends 20. Inside the upperends of the strips l9 are disposed pieces 2| which are formed witharcuate grooves 2m, theseforming cams for the travel of pins 22 carriedin bearings 23 which extend from the upper bar 24 of a visor frame 25.The pins 22 not only act as pivots for the visor to swing out from belowas indicated in Figure 4, but the cam slots 2la also provide room for arising and falling movement on the part of the visor. In-

cidentally, the pins 22 are threaded through the bearings 23, so as tobe retractable from the cam -pieces II and permit the removal of thevisor;

and the pins have external and slotted heads as seen in Figure 4 topermit the.pins .to be adjusted by means of a screw driver.

The visor frame 25 is principally constructed along the lines of theventilator frame in that it is channeled and fabric-insulated in respect'to a glass sight 25a. The swing of the visor is controlled by thefamiliar type of spacer bracket 26 which is longitudinally slotted at26a to receive the neck of a bolt 21 whose shank passes through a flangea of the bend 20 to receive an adjusting cap nut 28. It is seen inFigure3 that the bracket 26 folds closeqto the ventilator when its visor isclosed, soas not to be in the way.

The visor frame is specially constructed to perpeculiarity of the visorframe also extends to its relation with the top bar l3 of the ventilatorframe and bar 24a of a visor next below the one just described. In otherwords, the first-described visor is intended to close in relation to thesaid bars in a manner to both permit the easy operation of the uppervisor, yet enable it to be tightly closed when swung in. For the purposespecified, the top bar 24 of the upper visor is formed with a rearupstanding angle strip 240 in order to interlock with a similar downwardformation or flange I30. of the bar l3 when the visor rises into closedposition. A fabric weather strip 24d is carried on theinner side of thestrip 240 in order that the closure so formed may be weather proof. Whenthe visor has been closed as described, its bottom bar flts in the angleformed by the bar 24a with a rear upstanding extension :1 of its own,the receiving side of the latter also carrying a strip of insulatingfabric Me. Thus, an interlocking seal between the upper visor and thetop bar of the ventilator has been provided; also, a similar sealbetween the meeting bars of the visors is had. In addition, the sides ofthe visors are sealed to the sides of the ventilator frame, and thebottom of the lower visor tothe bottom of the ventilator frame, byforming the side and bottom bars of the latter with an outwardly facingchannel lsd containing a felt flller l3c. Thus the sides of the visorsections b and the bottom of the same in' the lower visor shut againstthe flller lie when the visors are closed.

The vertical bends 20 at the sides of the ventilator frame aresupplemented by a bottom section 20a. and sufllciently spaced from thevisors to permit the insertion of a fly screen which is grooved in itsside and bottom edges from the high position indicated by dotted linesin Fig. 2 to the full line position, the screen receiving the bends andsaid section in its grooves as it is slid down. It is seen that theventilator visors may be operated individually or jointly without beingaffected by the flyscreen. If desired, the fly-screen may be replaced bya frame formed with inwardly rojecting ventilator louvers, these beingmore suitable to check drafts in colder weather.

It will be seen from the above description that I have provided aventilator which is easily applicable as a unit to any type of window.In

fact, it may be made much narrower than shown,

whereby to serve fully as a substitute for a window pane in a doublewindow such as shown in Fig. 6, or a French window. The ventilator doesnot require any changein window design or construction as it does'notdepend in any manner on the form of the window, but may be dimensionedto suit a variety of window widths as was previously explained. Theventilator would occupy a height of less than one-third in a sash ofconventional height, although a shorter sash has been shown in thedrawings because of lack of space, this feature indicating that an ampleamount of light through the sash is allowed despite the presence of theventilator. The visor attachments permit various degrees of ventilationto pass through the ventilator without occasioning direct drafts. Yet,additional protection may be had by the provision of a slide containingfly netting, -louvers, or even an exhaust fan in case this type ofventilation is desirable.

The novel ventilator is preferably constructed of copper strip materialor of such other metal as may withstand weather conditions or theeffects of water seepage when the window is washed. In this connection,it is seen that the novel ventilator does not present obstructions tothe window washing operation. Further, when the window has been locked,the ventilator provides no access to anyone seeking an unauthorizedentrance, as the visor. openings are narrow and remote from the lockingzone of the window sash. While the ventilator may be applied to anywindow in a dwelling or other building it is preferable to install it ina window which is usually kept closed or locked so that properventilation may be had without the necessity of unlocking or opening thewindow. Finally, it will be appreciated that the novel ventilator isneatly constructed along lines of simplicity and rigidity.

I claim: I,

1. A window ventilator comprising a rectangular frame, visor elementscarried by said frame, spaced channel flanges along the sides and bottomof the frame on the inner side of the ventilator and a fly-screen framegrooved in its sides and bottom, the flanges forming guides to receivethe screen frame as a slide.

2. A ventilator for windows comprising a frame insertable in the windowsash, the upper bar of the frame being of rectangular cross-section andwith a pendent outer flange, a visor swingably mounted onsaid' frame,said visor having an upper bar of angular cross-section seating theupper bar of the frame when the visor is closed, said flange of saidframe overlapping the upper bar of said visor, cams carried by theventilator frame at the sides, and

.hinge pins carried by the visorandtraveling in the cams, the course ofthe cams being such as to lower the visor to clear said outer flangebefore it can be swung out.

3. A ventilator for windows comprising a frame insertable in the windowsash, the upper bar of the frame being of rectangular cross-section, andwith a pendent outer flange, a visor swingably mounted on said frame,said visor having an upper bar of angular cross-section seating theupper bar oflthe frame when the visor is closed, said flange of saidframe overlapping the upper bar of said visor, cams carried by theventilator frame at the sides, and hinge pins carried by the visor andtraveling in. the cams, the course of the cams being arcuate whereby tolower the visor in an outward course to clear said outer :flange beforeit can be swung out.

4. A window ventilator insertable in the pane of a window and comprisinga rectangular frame, upper and lower individually framed visor elementsmounted in said frame for independent swinging movement, the upper' barof the upper visor frame and the upper bar of the ventilator frame beingengageable to form a closure, the lower bar of the lower visor frame andthe lower bar of the ventilator frame being similarly engageable to forma closure, and the respective bottom and top bars of the upper and lowervisor frames being engageable to form a closure.

5. The structure of claim 4, the meeting bars of the visors being ofangular cross-sectionwhereby to cause the visors to engage with eachother.

6. A window ventilator comprising a unit adapted to replace a portion ofthe pane in a window sash, said unit including a rectangular framehaving top, bottom and side bars, said top and bottom bars beingextended beyond said side bars, the free ends of said extended barsbeing adapted for rigid seating in the stiles of said sash, and theinner edges of said extended portions of said top and bottom bars beingformed to support transparent glazed panels therebetween.

'7. The structure of claim 6, and the upper edge of the top bar andlower edge of the bottom bar being formed to provide longitudinallyextending channel portions to seat the free edges of the remaining sashpane portions.

8. A window ventilator comprising a unit adapted to replace a portion ofthe pane of a window sash, said unit including a rectangular framehaving top, side and bottom bars, said top and bottom bars beingextended beyond said side bars, the free ends of said extended barsbeing adapted for being rigidly seated in the stiles of said sash, theinner edges of said extended portions of said top and bottom barssupporting glazed transparent panels therebea portion of the sash pane,said unit comprising a rectangular frame having top, bottom and sidebars, said side bars being spaced apart a distance less than the widthof a. sash of minimum normal width, the top and bottom bars of saidframe being extended laterally beyond said side bars a distance sumcientto permit the outer ends of said top and bottom bars to seat in thestiles of a sash of maximum normal width, the facing edges of saidextended portions of said top and bottom bars being formed to supportglazed transparent panels therebetween, and movable ventilation controlmeans carried by said frame between said side bars.

10. A window ventilator comprising a unit adapted to replace a portionof a window sash pane, said unit including a rectangular frame havingtop, bottom and side bars, said top and bottom bars being extendedbeyond said side bars, the free ends of said extended bars being adaptedfor being rigidly seated in the stiles of said sash, panels carriedbetween the facing edges of the extended portions of said top and bottombars, and movable ventilation control means carried by said framebetween said side bars.

- EDWIN W. FRIEDHOIDI. J3.

